
where the first (second) uncertainty is statical (systematic) one and \(q^2\)  is
the dilepton invariant mass squared.
Its deviation from the SM prediction is about 3.1 \(\sigma \) .
There are also discrepancies in the measurements of the angular observable \(P^{\prime }_5\) 
in the \(B\)  meson decay (\(B \rightarrow K^* \mu ^+ \mu ^-\) ) [1]}, [2]}, [3]}, [4]}, [5]}, as well as in
\(R_{K^*} = BR (B \rightarrow K^* \mu ^+ \mu ^-)/ BR (B \rightarrow K^* e^+ e^-)\)  [6]};
we call these as \(b \rightarrow s \mu ^+ \mu ^-\)  anomalies.
